Product info

Calcium Carbonate

Limestone is a resources that has been nurtured by the Earth since prehistoric times.
This stone, in the course of times, has been playing important roles as materials for construction of civilization and for artistic works.
From 2500 B.C. to 1500 B.C., those beauties of the legacy such as pyramids and the Venus de Milo from ancient Greece were created, making maximum use of the grace, workability, durability, uniformity, and other characteristics brought by limestone.
In present times, limestone is applied in various fields for the use in strong linkage with our lives.

Views of our products with a scanning electron microscope（×1500）

Table of Quality Physical Tests [Products from Tojo Factory］

Calcium Carbonate for Food Additives

Test ItemProduct Name

Average Particle Size

Residue on 45μm

Whiteness

Moisture Content

Iron

Standards for Ingredients of Food Additives

μm

% or less

%

% or less

% or less

Japanese Standards of Food Additives

MAMACALSO

2.2

0.01

95

0.3

0.01

Conform

TOKYU MAMACALSO

2.2

0.01

96

0.3

0.01

Conform

CHOTOKYU MAMACALSO

2.2

0.01

97

0.3

0.01

Conform

Food grade producing at Tojo Plant is certified as
Food additive Good Manufacturing Practice(GMP) and Halal.

Calcium carbonate is limited to the purposes of nutrient and the cases where calcium carbonate is essential for production and/or processing of food.
Calcium carbonate is up to 10% of chewing gum (excluding the foods that require an indication of a special purpose). For any other foods, calcium carbonate is up to 1.0% (excluding the foods that require an indication of a special purpose).

Unprocessed Products for Industrial Use (Representative Measurement)

Test ItemProduct Name

Average Particle Size

Residue on 45μm

Whiteness

Moisture Content

Apparent Specific Gravity

DOP Absorption

μm

% or less

%

% or less

A:g/ml

B:g/ml

ml/100g

NITOREX#23P

1.0

0.00

93

0.4

0.50

1.11

24

NITOREX#80

1.0

0.00

94

0.4

0.24

0.78

-

NITOREX#70

1.2

0.00

94

0.4

0.28

0.89

-

NS#2300

1.0

0.00

94

0.4

0.24

0.80

40

NS#1000

1.2

0.00

94

0.3

0.28

0.90

38

NS#400

1.7

0.00

94

0.3

0.38

1.09

35

NS#100

2.1

0.01

93

0.3

0.46

1.19

32

MM#100

2.2

0.01

95

0.2

0.46

1.19

32

SS#30

7.4

5.0

90

0.2

0.83

1.45

27

NN#500

4.4

0.05

92

0.3

0.70

1.39

28

NN#200

14.8

0.2

90

0.2

0.91

1.49

20

RM#1

5.6

1.0

90

0.3

0.76

1.41

-

RM#2

7.4

20.0

90

0.3

0.83

1.45

-

Chemical Treatment Products for Industrial Use

NCC Series For all types of plastic such as PVC

For all types of plastic as well as PVC
(General-purpose surface treatment product/saturated fatty acid treatment product)Hydrophobic

Excelling in dispersion, prevention of precipitation and aggregation when used in water-based emulsion paints

NEW LITE LL

2.1

21

Organic chemical treatment

Most suitable for oil putty, sealing, caulking
Prevention of caking of paint

TSS Series Titanium coupling agent coated products

Test ItemProduct Name

Average Particle Size

DOP Absorption

Whiteness

Features

μm

ml/100g

%

TSS #100

2.1

29

93

Titanium coupling agent coated products

Lowered melting viscosity

Good thermal stability

Good dispersion, improved processability

Big saving of plasticizer

Improved physical properties

［Measuring Method］

Average Particle Size

Powder specific surface area measuring device SS-100 (manufactured by Shimadzu Corporation) was used to measure the specific surface area of 1g of powder. The average particle diameter of the powder was calculated with the following equation.

As defined in JIS K5101; 1000g or 2000g of sample was sifted with water on a sifter with openings of 45μm; residue on the sifter

Moisture Content

As defined in JIS K5101; Sample was dried at 105 °C for 2 hours to reduce weight.

Apparent Specific Gravity A

As defined in JIS K5101 (The status in which powder is placed as softly as possible.)

Apparent Specific Gravity B

5g of sample was collected in a graduated test tube. The test tube was made to fall from the height of 5cm 100 times before the specific gravity was measured.

DOP Absorption

As defined in JIS K5101 with necessary modification (DOP was used.)

Whiteness

The relative value on a white meter with the whiteness of magnesium oxide (MgO) taken as 100%

In addition to the products listed in this table, we have a wide variety of products. As our products are made of natural minerals, the results of measurement may vary in some extent depending on the origin of mining. Contact us for the products produced at our Suzuka Factory and Fukushima Factory.

Table of Major Characteristics of Our Products

CALPET Series For polyolefins such as PP, PE, and EVA [Products from Tojo Factory]

CALPET for general purposes in blend with PP or PE product

Product

Net (kg)

Resin Content : Calcium Carbonate Content

Specific Gravity

Shape

Features

CALPET A

25

20%：80%

1.9

Pellet

For both extruded products and injected products

For inflation, PP band, blow-molding etc.

Contributing to enhancement of strength

CALPET M

25

20%：80%

1.9

Pellet

High MFR (80 or higher), easy processing

In addition to CALPET products listed in this table, we can take your orders to produce the blend of your choice in a consignment basis.